|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Denitrification and microbial community in MBBR using A. donax as carbon source and biofilm carriers for reverse osmosis concentrate treatment显示文摘In this study,raw Arundo donax(A.donax)pieces were applied as carbon source and biofilm carriers for denitrification in a lab-scale moving bed biofilm reactor(MBBR)for the treatment of reverse osmosis concentrate gathered from local wastewater reuse plant.At stable phase(about 60 days),efficient denitrification performance was obtained with73.2%±19.5%NO3--N average removal and 8.10±3.45 g N/(m3·day)NO3--N average volumetric removal rate.Mass balance analysis showed that 4.84 g A.donax was required to remove 1 g TN.Quantitative real-time PCR analysis results showed that the copy numbers of 16S r-RNA,narG,nirS,nosZ and anammox gene of carrier biofilm and suspended activated sludge in the declination phase(BF2 and AS2)were lower than those of samples in the stable phase(BF1 and AS1),and relatively higher copy numbers of nirS and nirK genes with lower abundance of narG and nosZ genes were observed.High-throughput sequencing analysis was conducted for BF2 and AS2,and similar dominant phyla and classes with different abundance were obtained.The class Gammaproteobacteria affiliated with the phylum Proteobacteria was the most dominant microbial community in both BF2(52.6%)and AS2(41.7%).The PICRUSt prediction results indicated that 33 predictive specific genes were related to denitrification process,and the relative abundance of 18 predictive specific genes in BF2 were higher than those in AS2. | Li Li Guokai Yan Haiyan Wang Zhaosheng Chu Zewen Li Yu Ling Tong Wu | 2019 | Journal of Environmental Sciences2019，31，10： | 11 |
| 2 | Initial carbon release characteristics, mechanisms and denitrification performance of a novel slow release carbon source显示文摘External carbon source addition is one of the effective methods for the treatment of wastewater with low carbon to nitrogen ratio(C/N). Compared with fast-release liquid carbon sources, slow-release solid carbon sources are more suitable for the denitrification process. A novel slow-release solid carbon source(corncob-polyvinyl alcohol sodium alginatepoly-caprolactone, i.e. CPSP) was prepared using corn cob(CC) and poly-caprolactone with polyvinyl alcohol sodium alginate as hybrid scaffold. The physical properties and carbon release characteristics of CPSP and three other carbon sources were compared. CPSP had stable framework and good carbon release performance, which followed the second order release equation. The formic acid, acetic acid, propionic acid and butyric acid released from CPSP accounted for 8.27% ± 1.66 %, 56.48% ± 3.71 %, 18.46% ± 2.69% and 16.79% ± 3.02% of the total released acids respectively. The start-up period of CPSP was shorter than that of the other carbon sources in denitrification experiment, and no COD pollution was observed in the start-up phase(25–72 h) and stable phase(73–240 hr). The composition and structure of the dissolved organic compounds released by CPSP and other carbon sources were analyzed by UV-Vis absorption spectroscopy and three-dimensional fluorescence spectroscopy,which indicated that CPSP was more suitable for denitrification than the other studied carbon sources. | Congyu Li Haiyan Wang Guokai Yan Weiyang Dong Zhaosheng Chu Huan Wang Yang Chang Yu Ling Yanjie Zhang | 2022 | Journal of Environmental Sciences2022，34，8： | 5 |
| 3 | N2O emission in partial nitritation-anammox process显示文摘Nitrous oxide(N2O)is one of the significant greenhouse gases,and partial nitritation-anammox(PNA)process emits higher N2O than traditional nitrogen removal processes.N2O production in PNA mainly occurs in three different pathways,i.e.,the ammonia oxidizing bacteria(AOB)denitrification,the hydroxylamine(NH2 OH)oxidation and heterotrophic denitrifiers denitrification.N2O emission data vary significantly because of the different operational conditions,bioreactor configurations,monitoring systems and quantitative methods.Under the common operational parameter scopes of PNA,N2O emission via NH2 OH oxidation dominates at relatively low dissolved oxygen(DO),low inorganic carbon(IC),high pH or low N02-concentration,while N2O emission via AOB denitrification dominates at relative higher DO,higher IC.lower pH or higher N2O-concentration.AOB are highly enriched while nitriteoxidizing bacteria(NOB)are rarely found in partial nitritation process,and the order Nitrosomonadales of AOB is the dominant group and N2O producer.Anammox bacteria,AOB and certain amount of heterotrophic denitrifying bacteria are observed in the anammox process,the genus Denitratisoma and the heterotrophic denitrifying bacteria in the deep layer of anammox granules are the dominant N2O generation bacteria.In one-stage PNA reactors,anammox bacteria account for a large fraction of the biomass,AOB account for small portion,and NOB account for even less.The microbial community,diversity and N2O producers in one-stage PNA reactors are similar with those in two-stage PNA reactors.The dominant anammox bacteria,AOB and NOB in PNA are the species Candidatus Brocadia,the genera of Nitrotoga,Nitrospira and Nitrobacter,and the genus Nitrosomonas,respectively.The relations between N2O emission pathways and microbial communities need further study in the future. | Li Li Yu Ling Haiyan Wang Zhaosheng Chu Guokai Yan Zewen Li Tong Wu | 2020 | Chinese Chemical Letters2020，31，1： | 3 |
| 4 | Unsupervised image-to-image translation by semantics consistency and self-attention显示文摘Unsupervised image-to-image translation is a challenging task for computer vision. The goal of image translation is to learn a mapping between two domains, without corresponding image pairs. Many previous works only focused on image-level translation but ignored image features processing, which led to a certain semantics loss, such as the changes of the background of the generated image, partial transformation, and so on. In this work, we propose a method of image-to-image translation based on generative adversarial nets(GANs). We use autoencoder structure to extract image features in the generator and add semantic consistency loss on extracted features to maintain the semantic consistency of the generated image. Self-attention mechanism at the end of generator is used to obtain long-distance dependency in image. At the same time, as expanding the convolution receptive field, the quality of the generated image is enhanced. Quantitative experiment shows that our method significantly outperforms previous works. Especially on images with obvious foreground, our model shows an impressive improvement. | ZHANG Zhibin XUE Wanli FU Guokai | 2022 | Optoelectronics Letters2022，18，3： | 2 |
| 5 | Modifed Pre-stretching Assembly Method for Cable-Driven Systems显示文摘Soft cable-driven systems have been employed in many assembled mechanisms, such as industrial robots, parallel kinematic mechanism machines, medical devices, and humaniform hands. A pre-stretching process is necessary to guarantee the quality of cable-driven systems during the assembly process. However, the stress relaxation of cables becomes a critical concern during long-term operation. This study investigates the effects of non-uniform deformation and long-term stress relaxation of the driven cables owing to moving parts in the system. A simple closed-loop cable-driven system is built and an alternating load is applied to it to replicate the operation of transmission cables. Under different experimental conditions, the cable tension is recorded and the boundary data are selected to be curve-fitted. Based on the fitted results, a formula is presented to estimate the stress relaxation of cables to evaluate the assembly performance. Further experimental results show that the stress relaxation is mainly caused by cable creep and the assembly procedure. To remove the influence of the assembly procedure, a modified pre-stretching assembly method based on the stress relaxation theory is proposed and verification experiments are performed. Finally, the assembly performance is optimized using a cable-driven surgical robot as an example. This paper proposes a dual stretching method instead of the pre-stretching method to assemble the cable-driven system to improve its performance and prolong its service life. | Guokai Zhang Xuyang Ren Jinhua Li Kang Kong Shuxin Wang Jingchao Shen | 2019 | Chinese Journal of Mechanical Engineering2019，32，3： | 2 |
| 6 | C-glycosylflavones from the leaves of Iris tectorum Maxim.显示文摘A new C-glycosylflavone,5-hydroxyl-4′,7-dimethoxyflavone-6-C-[0-(α-L-3″-acetylrhamno-pyranosy)-1→2-β-D-glucopyranoside](1),along with five known C-glycosylflavones,5-hydroxy-4′,7-dimethoxyfavone-6-C-[0-(α-L-2′″-acetylrhamnopyranosy1)-1→2-β-D-glucopyranoside](2),embinin(3),embigenin(4),swertisin(5)and swertiajaponin(6)were isolated from the leaves of Iris tectorum Maxim.Their structures were elucidated on the basis of extensive NM R experiments and spectral methods and their cytotoxic activities against A 549(lung cancer)human cell lines were determined. | Yuhan Ma Huan Li Binbin Lin Guokai Wang Minjian Qin | 2012 | Acta Pharmaceutica Sinica B2012，2，6： | 2 |
| 7 | Efficient multicast algorithms for multichannel wireless mesh networks显示文摘 | Zeng Guokai Wang Bo | 2010 | IEEE Transac- tions on Parallel and Distributed Systems2010，21，1： | 1 |
| 8 | Ag3 PO4/Biz WO6 hi- erarchical heterostructures with enhanced visible light photocatalyt- ic activity for the degradation of phenol显示文摘 | Fu Guokai Xu Guanan Chen Shuiping | 2013 | Catalysis Communica- tions2013，40，： | 1 |
| 9 | Actin-Myosin Contractility Is Responsible for the Reduced Viability of Dissociated Human Embryonic Stem Cells显示文摘 | Guokai Chen Zhonggang Hou Daniel R. Gulbranson James A. Thomson | 2010 | Cell Stem Cell2010，，2： | 1 |
| 10 | Mustard tuber wastewater treatment and simultaneous elee~city generation using microbial fuel cells显示文摘 | Fei Guo Guokai Fu Zhi Zhang | 2013 | Bioresource Technology2013，136，： | 1 |
| 11 | Easy Grasp: A novel hybrid-driven manual medical instrument for laparoscopic surgery显示文摘 | Wang Xiaofei Wang Shuxin Li Jianmin Zhang Guokai He Chao | 2012 | Proceedings of the Institution of Mechanical Engi2012，，12： | 1 |
| 12 | Resource Allocation with Interference Avo- idance in OFDMA Femtocell Networks显示文摘 | LIANG Yushan CHUNG W H NI Guokai | 2012 | IEEE Transactions on Vehicular Technalogy2012，61，5： | 1 |
| 13 | Us- ing Partially Overlapping Channels to Improve Throughput in Wireless Mesh Networks显示文摘 | DING Yong HUANG Yi ZENG Guokai | 2012 | IEEE Transactions on mobile computing2012，11，11： | 1 |
| 14 | Effi- cient Link-heterogeneous Multicast for Wireless Mesh Networks显示文摘 | ZENG Guokai WANG Bo Matt Mutka | 2012 | Wireless Networks2012，18，6： | 1 |
| 15 | Top-A: queryresult completeness verification in tiered sensor networks显示文摘 | Yu Chiamu Ni Guokai Chen Ingyi | 2014 | IEEE Transactions on Information Forensics and Se-curity2014，9，1： | 1 |
| 16 | Active label-denoising algorithm based on broad learning for annotation of machine health status显示文摘Deep learning has led to tremendous success in machine maintenance and fault diagnosis.However,this success is predicated on the correctly annotated datasets.Labels in large industrial datasets can be noisy and thus degrade the performance of fault diagnosis models.The emerging concept of broad learning shows the potential to address the label noise problem.Compared with existing deep learning algorithms,broad learning has a simple architecture and high training efficiency.An active label denoising algorithm based on broad learning(ALDBL)is proposed.First,ALDBL captures the embedded representation from the time-frequency features by a recurrent memory cell.Second,it augments wide features with a sparse autoencoder and projects the sparse features into an orthogonal space.A proposed corrector then iteratively changes the weights of source examples during the training and corrects the labels by using a label adaptation matrix.Finally,ALDBL finetunes the model parameters with actively sampled target data with reliable pseudo labels.The performance of ALDBL is validated with three benchmark datasets,including 30 label denoising tasks.Computational results demonstrate the effectiveness and advantages of the proposed algorithm over the other label denoising algorithms. | LIU GuoKai SHEN WeiMing GAO Liang KUSIAK Andrew | 2022 | Science China(Technological Sciences)2022，65，9： | 1 |
| 17 | Chemical etching process of copper electrode for bioelectrical impedance technology 显示文摘 | Zhou Wei Song Rong Jiang Lelun Xu Wenping Liang Guokai Cheng Decai Liu Lingjiao | 2012 | Transactions of Nonferrous Metals Society of China2012，22，： | 1 |
| 18 | Ef- ficient Multicast Algorithms for Multi-channel Wireless Mesh Network显示文摘 | ZENG Guokai WANG Bo DING Yong | | IEEE Transactions on Parallel and Distributed Systems0，2010，： | 1 |
| 19 | Experimentalstudyaboutflowofliquidinrotatingpackedbed[J]显示文摘 | ZhanJun(张军) GuoKai(郭锴) GuoFen(郭奋) ZhuJiesong(竺洁松) ZhengChong(部冲) | | 髙校化学工程学报0，，： | 1 |
| 20 | Effects of Rhynchophylline on Learning and Memory of Alzheimer's Disease Zebrafish显示文摘[Objectives]To investigate the effect of rhynchophylline on the behavior of Alzheimer's disease zebrafish induced by aluminum trichloride(AlCl3),to provide theoretical basis for the development and application of rhynchophylline in the field of Alzheimer's disease.[Methods]The video recording was made on zebrafish before training,so as to judge whether zebrafish training was successful or not.After training zebrafish for 7 d,60 zebrafish were randomly divided into 6 groups:blank group,model group,positive group,low-dose rhynchophylline group,medium-dose rhynchophylline group and high-dose rhynchophylline group.The blank group was video-recorded,while the model group,positive group,low-dose group,medium-dose group and high-dose group were exposed to AlCl3 for modelling.After the end,the model group was video-recorded,and the other groups were given drug intervention.Both the positive group and the rhynchophylline group were given drug for 6 d,and finally all the groups were video-recorded.After all the videos were finished,the behavioral analysis was carried out by using the behavioral record analysis software smart3.0,and the conclusion was drawn by analyzing the data.[Results]The data of length of stay of zebrafish in red short arm area of 6 groups were compared and analyzed:there was a significant difference between blank group and model group(P<0.05),and there was a significant difference between model group and positive group,medium-dose group or high-dose group(P<0.05).The percentage of time spent in the red short arm area of 6 groups of zebrafish was compared and analyzed:there was a significant difference between blank group and model group(P<0.05),and there was a significant difference between model group and positive group,medium-dose group or high-dose group(P<0.05).The data of swimming distance of 6 groups of zebrafish in red short arm area were compared and analyzed:there was no significant difference between the blank group and the model group(P>0.05),but there was only significant difference between the model group and the high-dose group(P<0.05).The percentage of swimming distance of zebrafish in the red short arm area of the six groups was compared and analyzed:there was a significant difference between the blank group and the model group(P<0.05),and there were significant differences between model group and positive group,medium-dose group or high-dose group(P<0.05).[Conclusions]Rhynchophylline can improve the behavior of Alzheimer's disease zebrafish. | Kaifei LIU Yao HUANG Guokai GUAN Shimin WU Xunyi LI Linglin CHEN Yifei CHEN | 2021 | Medicinal Plant2021，12，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员